/Engine/Plugins/Experimental/Water/Source/Runtime/Public/WaterSplineMetadata.h
bool PropagateDefaultValue ( int32 PointIndex, const [FWaterSplineCurveDefaults](API\Plugins\Water\FWaterSplineCurveDefaults) & CurrentDefaults, const [FWaterSplineCurveDefaults](API\Plugins\Water\FWaterSplineCurveDefaults) & NewDefaults )